Mechanical doubling apparatus for use in connection with rolling mills



Feb. 1925 1,525,820

w. MILES ET AL MECHANICAL DOUBLING APPARATUS FOR USE IN CONNECTION WITH ROLLING MILLS Filed March 11, 1924 2 Sheets-Sheet 1 Feb. 0, 9 1,525,820

W. MILES ET AL MECHANICAL DOUBLING APPARATUS FOR USE IN CONNECTION WITH ROLLING MILLS Filed March 11, 1924 2 Sheets-Sheet 2 Patented Feb. 1Q, 1925,

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WILLIAM MILES AND WILLIAM THOMAS, 015 PORT TALBOT, AND WILLIAM BR-ABAZON HALLOWES, F COWBRITDGE, ENGLAND.

MECHANICAL DOUBLING' APPARATUS FOR USE IN CONNECTION WITH ROLLING MILLS.

Application filed March 11, 924.. Serial No- 698,378.

p aratus for. Use in Connection with Rolling,

Mills. do hereby declare that the following is a full, use, and exact description of the same.

The subject of this invention is an apparatus primarily for use in connection with hot rolling mills for doubling sheets, e. g, steel sheets, in the manufacture of tinplates, terne-plates, blackplates or the like.

, Broadly the invention consists in .a. mechanicail doublingapparatus comprising a bed-plate or support, a former above .the bed-plate or support and folding members angularly movable to fold the sheet around the former. V l In a preferred construction according to the"invention there is secured to the bedplate a bracket in which is mounted for sliding movement a former around which the sheet to be treated may be folded, and

39 in coniunction with which former there are provided folding members constituted by arms or curved levers mounted for angular movement conveniently. on a common shaft, and so arranged that, on angular movement of the shaft, the arms emerge from beneath the bed-plate, and fold the sheet around the former into the required doubled shape. Suitably there are provided on thebed-plate a segmental guide vand an angle iron. form- 40 ing stationary guiding means for the sheets to be folded.

In one form mounted on a common shaft the shaft is fitted with a pinion adapted to be rotated by a spur wheel operated, say, by a lever actuated by a hydraulic ram; or the like.

The former is moved axially by a rope atin which the arms are" tached to acrosshead and slide working in guide bars nearthe end of .the lever. The lever engages in the cross-head at the bottom of the stroke, and on its upward stroke carries the crosshead and slide. When the crosshead is tripped off the end of the lever at the top of the stroke, the crosshead and slide fall, and, in falling, effect the protrusion of the former. On the upward stroke of the crosshead and slide the former is withdrawn.

In the accompanying drawing is illustrated an embodiment of the apparatus. Figure 1 being an end elevation, Fig. 2 a side elevation, Fig. 2* a somewhat diagrammatic representation of the tripping linkage, and Fig. 3a plan view, I I

The same letters of reference indicate the same parts in the several figures of the drawing.

Referring to the drawing, a denotes the bed-plate. of the apparatus to which are secured plummer blocks, 71., hi. serving as bearings for the spindle or shaft 7) on which is keved or otherwise secured a pinion f .meshing with a spur wheel 0 rotatablv mounted on the stud s, secured to one side of the bed-plate; (Z denotes a segmental guide and n an angle iron serving as a guide for the sheet to be folded; e the former around which the sheet is folded, and 0 a bracket in which the former slides. The guides and the bracket are secured by bolts to the upper side of the bed-plate. A gap 9 at the front end of the bed-plate a permits the sheet being folded to be gripped with tongs. The bed-plate (a is slotted to permit the passage of curved levers or arms. Z. Z Z which are mounted on the spindle of shaft 7), and of the crossbar m. 1' denotes a hydraulic cylinder supported on the standards u, a secured to a sole plate y, g a joint pin fixed in the crosshead z of the ram andpassingthrough a slot in the lever and-between guide bars 00, m for the crosshead z. The wire rope a for transmitting axial movement to the former is securedto the lug of the former. One end of the rope a is attached to the bottom of the crosshead and slide 0 whence the rope (4 passes under the sheave (Z and over the sheave 0 around the sheaves f 9 and over the sheave to the weight located beneath the fork m n 71 72- and n are guide bars for the crosshead and slide 0 The lever 0 is fulcrumed on the crosshead joint pin and is slotted for passage of the lever A The lever 0 when at the bottom of the stroke, rests against the spring 8 The lever 70 on its downward stroke forces the lever 0 back, compressing the spring 8 until the lever 76 enters the slot in the lever 0 Then the spring forces the lever 0 forward. A roller 1" is fitted at the upper end of the slot in the lever 0 a is a fulcrum or bearing for the crank lever 25 used for tripping the lever 0' off the end of the lever 70. The crank lever t is actuated by the pedal lever 0 which operates the hydraulic control valve 2 is a. pedal; 10 a balance weight; .2 a fulcrum joint bracket for the pedal lever 42 c a rod connecting the pedal lever o to the valve :0 (Z an angle plate serving to carry the sheaves f 9 and slotted centrally to afford a guide for the lug 5 fixed to the former; e a support for the sheave 6 f a support for the sheave 7L and if stays for the guide bars 42 a".

The curved levers Z, Z, Z derivetheir actuation from the lever A: secured to the spur wheel 0, and fitted with .a counterbalance weight w. The curved levers Z, 2 Z are indicated in Fig. 3, in their initial positions by full lines, the dotted lines indicating the positions they occupy when they have fully completed their travel in thedirection for effecting the folding or doubling of the sheet. The sheet l is indicated by dotted lines.

The modus operandi is as follows The sheet P to be doubled or folded is placed on the bed-plate The pedal 7 is thenpressed downwards which "auses firstly the lever 0 to" be tripped off the endof the lever /c,the erosshead and slide -andthe weight k thereby falling and pulling the former. out quickly above the sheet P; as vthe pedal continues its downward stroke, the hydraulic valve a is opened and the pressure is appl-iedto the lever 7a which rotates the spur wheel'c and drives. the pinion f which is-securedito the shaft 7). The crossbar mat theend of the curved levers pushes one end of the sheet upwards, the centre part of the sheetcomingin contact with the bottom of the former. The crossbar at in its angular movementithrough an angle of-about 180 degrees'folds the sheet while the curved levers, Z, Z ,.Z force the sheet around the former 6 into the required doubled shape. The pressure on the pedal is released and the counter-balance Weight to raises the pedal 3 to its initial position and cuts off the pressure fluid supply and opens the valve r to allow the water to exhaust from the hydraulic cylinder 7'. The counter-balance .veiglit 10 then reverses the motion of the parts, withdrawing the former a and returning the curved levers Z, Z Z to their initial positions.

lVe claim:

1. Mechanical doubling apparatus for use in connection with rolling mills, comprising a support, a former above the support and folding members angularly movable to fold the sheet around the former, and means for moving said former transversely of the support, said means including a rope movable axially of the former and a connection be tween said rope and said former.

Mechanical sheet doubling apparatus for use in connection with rolling mills, comprising a bedplate, a former movable transversely of'the sheet above the bedplate, folding members angularly movable to fold the sheet around the former and means operative to effect angular movement of the folding members and movement of the former, said means including a rope mov-..

tolding members and movement of tliei former, said means including a housing for the former, pulleys on said housingga'rope movable axially of the former and guided over said pulleys and trip gear controlling the movement of said rope. 4-. .Mechanical doubling apparatus for use in connection with rolling mills, com

prising a bedplate, a former above the'bedplate. folding means angularly movable to fold a sheet around:the-former,said folding meansbeing constituted by arms adapted to penetrate slots in said bedplate, and

means for moving said former transversely of said support, said means including a rope movable axially of the former and a connec- .tion between said rope and. said former.

Mechanical. doubling apparatus foruse in connection with rolling mills,--coinprising a fbedplatc, a former above the'bedplate,

folding members angularly movable tofold a sheet around said former, stationary guidmg means for the vsheet mounted on said bedplate,:and means for, moving said former transversely ofsai'dsupport, said means-hr eluding; a rope inovable a-xially of theformer and a connection between said ropeand sa i d former.

6. l\leehanieal doubling apparatus for use a bedplate, a former movable in connection with rolling mills, comprising a support, a former above the support, folding members angularly movable to fold the sheet around the former, separately actuated means for moving said former transversely of the support, said. means being tripped by the operation of starting the motion of the folding members.

In testimony whereof We have signed our names to this specification in the presence 10 of two subscribing witnesses.

WILLIAM MILES. WILLIAM THOMAS. WILLIAM BRABAZON I-IALLOWES.

Witnesses H. C. THoMAs, C. F. PAYNE. 

